Improvement in coal-oil stoves



W. UNDERWO-OD.

'coAL-oI' STOVE.

Patented Jan. 30 1877.

WITNEE5EE= N. PEI'ERS. PHOT JONATHAN W. UNDERWOOD, OF AURORA, ILLINOIS.

IMPROVEMENT IN COAL-OIL STOVES.

Specification forming part of Letters Patent No. 186,903, dated January30,1877; application filed July 24, 1876. i

To all whom it may concern Be it known that I, JONATHAN W. UNDER- WOOD,of Aurora, in the county of Kane and State-of Illinois, have inventedcertain new and useful Improvements in Goal-Oil Stoves; and I do herebydeclare the following to be a ful],clear, and exact description thereof,which will enable others skilled in the art to which my inventionappertains to make and use the same, reference being bad to theaccompanying drawing, forming part of this specification, in whichFigure 1' represents a side elevation of a coal-oil stove embodying myinvention. Fig. 2 represents a vertical central section of the same.Fig. 3 represents a sectional plan of the same, taken on the line a: m,Fig. 1; and Fig. 4 represents a side elevation of the chimneys andburners detached.

Like letters of reference indicate like parts.

My invention relates to that class of coaloil stoves used for culinarypurposes; and the object of my invention is to simplify the constructionof such stoves, and to so arrange the several parts thereof, withrelation to each' .other, as to produce a more complete combustion.

To that end my invention consists in the combination and arrangement ofthe several parts of the stove, as is hereinafter described and claimed.

1n the drawing, A represents, the oil-reservoir, forming the base of thestove, which may be made as shown, or in any other suitable form'. C Oare the wick-tubes, which communicate with the interior of thereservoir, and

- extend upward therefrom, in the usual manner. D D are the ratchets foradjusting the wicks, which are arranged in the usual manner. E is asheet-metal rim, which is permanently secured to the upper surface ofthe reservoir A, and extends upward nearly to'th'e top of thewick-tubes, and so as to form an air-chamber, E, surrounding the saidtubes, and is provided with a series of apertures or perforations, a,through which air freely passes into said chamber E. F is a cast-metalcap, which is loosely fitted upon the upper edge of the rim E, and isprovided, at a point immediately over the respective wick-tubes, withdeflecting-cones c 6, through which the flames respectively pass. G Gare sheet-metal receptacles, which are permanently attached to thewick-tubes above the ratchets I) D, and so thatfthe said tubes passcentrally through them, as shown. Each of said receptacles is providedwith a cap, 61, forming a supplemental defiecting-cone, through whichthe flame passes, and is so arranged relative to the cones c c as toform an air space, 6, between them, and through which the air passesfrom the chamber E to supply the flame. The'arrangement of thereceptacles G G is such as to form a water-reservoir surrounding theupper portion of the wick-tubes, as shown in Fig. 2 and the angle of thesupplemental cones or caps d is such as to cause their centers to extendupward above the plane of the upper edge of rim E, and so as to forminlets f at each end of the caps, through which air passes into the saidreservoirs.

H is an annular cast-metal plate, which is permanently attached at itslower edge to the feet 9, as shown in Fig. 2. The arrangement of saidfeet is such as to rest upon the oil-reservoir A, and so as to elevatethe plate H above the cap F. J J are cast or sheet metal cones, whichare'permanently attached to the upper surface of the cap F, around thebase of the respective deflecting-cones c c, and extend upward a shortdistance above the same. K K are the chimneys, which are made of anysuitable sheet metal, and of the proper size at the base to fit snuglyaround the upper ends of the cones J J. L is a sheet-metal jacket, whichis permanently attached at its lower end to the upper surface of plateH, and so as to surround the chimneys, and thereby forming anair-chamber, M, between its inner surface and the chimneys, as shown inFig. 2. M is a cast-metal cap, upon which the cooking-vessels aresupported, and is adjusted to rest upon the upper edge ofthe jacket, andis firmly secured thereto by bolts h h, passing through the same, andextending downward to and through the cap F, between the chimneys. Thecaps F and M are provided with apertures, formed through them in avertical plane centrally over the wick tubes, and through whichapertures the chimneys pass.

The arrangement of the caps F and M, jacket L, and the chimneys is suchthat when the bolts 71. h are properly tightened the said several partsare firmly connected together, and so as to admit of being removedtogether from the wick-tubes when necessary to trim the wicks.

The cones J J are provided on each end with an opening, n, communicatingwith the air-space 0, immediately under the deflectingeones 0 c, theobject of which is to aid in supplying the flame with oxygen, and toincrease the volume of heated air passing upward through the chimneys,and also to admit of igniting the wicks without removing the cones J Jand the parts united thereto from over the wick-tubes.

By arranging the caps 11 so as to form the air-inlets f, communicatingwith the interior of the water-reservoirs, the air is freely admittedinto the said reservoirs, and intermingles with the steam generated bythe downward radiation of the heat from the flame, and is carried upwardthrough the opening in the cap to and in direct contact with the flameimmediately at the point of combustion by Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent,is-

1. The combination, with the wick-tubes O O and water-reservoir G G, asdescribed, of the deflecting-cones 0 c and caps d (1, arranged to formthe air-spaces a, substantially as and for the purpose specified.

2. The combination, with the chimneys K K, of the cones J J, provided ateach end with the openings n, communicating with the airspaces 6,immediately under the deflectingcones c 0, respectively, substantiallyas and for the purpose specified.

3. The combination, with the wick-tubes O G, of the water-reservoirs GG, caps 01 d, covers J J, deflecting-cones c c, chimneys K K, caps F andM, jacket L, and bolts h h, all united and arranged to operate together,as and for the purpose specified.

JONATHAN W. UNDERWOOD.

Witnesses:

N. O. GRmLEY, N. H. SHERBURNE.

